const {
  SMS,
  adapters
} = require('send-sms');

const ippanel = new adapters.IPPanel({
  apiKey: 'your api key'
});
const sms = new SMS(ippanel);

// when you need to send a simple message
sms.send('your phone number to send', 'foobar text', 'from tel line');

// sms.send returns a Promise so if you are in ES7 environment
try {
  await sms.send(phone, text, from);
} catch (err) {
  console.error(err);
}

const { Adapter } = require('send-sms');
class YourServiceAdapter extends Adapter {
  constructor(arguments) {
    super({
      // options like credentials
    });
  }
  send(phone, content, from) {
    // must implement this method in your self adapter, which does
    // send requests to service endpoint, and must return a Promise
  }
}